By Bongers Frans JM   Schellevis Francois G   van den Bosch Wil JHM   van der Zee Jouke   in British Journal of General Practice

ISSN:1478-5242|57|534|36-39

Royal College of General Practitioners‎(2007)‎

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By Bischoff Erik WMA   Schermer Tjard RJ   Bor Hans   Brown Pete   van Weel Chris   van den Bosch Wil JHM   in British Journal of General Practice

ISSN:1478-5242|59|569|927-933

Royal College of General Practitioners‎(2009)‎

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